#define _CRT_SECURE_NO_WARNINGS
void SListDesTroy(SLTNode** pphead)
{
	assert(pphead);
	assert(*pphead);;

	SLTNode* pcur = *pphead;
	while (pcur)
	{
		SLTNode* next = pcur->next;
		free(pcur);
		pcur = next;
	}
	*pphead = NULL;
}